From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:51813) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gJhwh-0002uK-EZ for qemu-devel@nongnu.org; Mon, 05 Nov 2018 11:41:48 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gJhwZ-0004At-Dt for qemu-devel@nongnu.org; Mon, 05 Nov 2018 11:41:44 -0500 From: Kevin Wolf Date: Mon, 5 Nov 2018 17:37:36 +0100 Message-Id: <20181105163744.25139-29-kwolf@redhat.com> In-Reply-To: <20181105163744.25139-1-kwolf@redhat.com> References: <20181105163744.25139-1-kwolf@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Subject: [Qemu-devel] [PULL 28/36] block: Make auto-read-only=on default for -drive List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-block@nongnu.org Cc: kwolf@redhat.com, peter.maydell@linaro.org, qemu-devel@nongnu.org While we want machine interfaces like -blockdev and QMP blockdev-add to add as little auto-detection as possible so that management tools are explicit about their needs, -drive is a convenience option for human users. Enabling auto-read-only=3Don by default there enables users to use read-only images for read-only guest devices without having to specify read-only=3Don explicitly. If they try to attach the image to a read-writ= e device, they will still get an error message. Signed-off-by: Kevin Wolf Reviewed-by: Eric Blake --- blockdev.c | 1 + 1 file changed, 1 insertion(+) diff --git a/blockdev.c b/blockdev.c index fc8794862f..e5b5eb46e2 100644 --- a/blockdev.c +++ b/blockdev.c @@ -590,6 +590,7 @@ static BlockBackend *blockdev_init(const char *file, = QDict *bs_opts, qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_NO_FLUSH, "off"); qdict_set_default_str(bs_opts, BDRV_OPT_READ_ONLY, read_only ? "on" : "off"); + qdict_set_default_str(bs_opts, BDRV_OPT_AUTO_READ_ONLY, "on"); assert((bdrv_flags & BDRV_O_CACHE_MASK) =3D=3D 0); =20 if (runstate_check(RUN_STATE_INMIGRATE)) { --=20 2.19.1